Thermostat bypass

ABSTRACT

A water cooled engine includes a thermostat interposed in a water flow passage way. The thermostat operates a valve which opens and closes to regulate the temperature of water. A bypass structure assembly is associated with the thermostat for permitting the flow of water through the thermostat to be controlled by the valve in the thermostat in an operating position of the bypass structure assembly and for bypassing the thermostat in a bypass position wherein water flows through the flow passageway bypassing the thermostat. A bypass position assembly is associated with the bypass structure assembly for positioning the bypass structure assembly in the operating position and in the bypass position.

FIELD OF THE INVENTION

The present invention relates to a water cooled engine having athermostat interposed in a water flow passageway wherein a bypassstructure assembly has an operating position and a bypass position, thethermostat controlling the flow of water in the operating position ofthe bypass structure assembly and the water flow bypassing thethermostat in the bypass position of the bypass structure assembly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded view showing the intake manifold and water neckportion of an air cooled engine and showing a bypass structure assemblyand a bypass position assembly constructed in accordance with thepresent invention and associated with a thermostat.

FIG. 2 is a top elevational view of the bypass position assembly andbypass structure assembly of FIG. 1 showing the bypass structureassembly positioned in the operating position.

FIG. 3 is a top elevational view, similar to FIG. 2, but showing thebypass structure assembly in the bypass position.

FIG. 4 is a sectional view taken substantially along the lines 4--4 ofFIG. 2.

FIG. 5 is a top elevation view of a modified bypass structure assemblyand a modified bypass position assembly.

FIG. 6 is a view of the bypass structure assembly and positionedassembly of FIG. 5, taken substantially along the lines 6--6 of FIG. 5.

FIG. 7 is a top elevational view of another modified bypass structureassembly and modified bypass position assembly.

FIG. 8 is a sectional view taken substantially along the lines 8--8 ofFIG. 7.

FIG. 9 is a sectional view of another modified bypass structure assemblyand modified bypass position assembly.

FIG. 10 is a sectional view of another modified bypass structureassembly and modified bypass position assembly.

FIG. 11 is an exploded view showing another modified bypass structureassembly and modified bypass position assembly and showing an intakemanifold and water neck portion of a water cooled engine.

FIG. 12 is a partial perspective, partial sectional view of anothermodified bypass structure assembly and modified bypass position assemblyand showing a portion of a water neck portion of a water cooled engine.

FIG. 13 is a sectional view showing another modified bypass structureassembly and modified bypass position assembly and showing a portion ofan intake manifold and a water neck of a water cooled engine.

FIG. 14 is a sectional view showing another modified bypass structureassembly and modified bypass position assembly and showing a portion ofan intake manifold and a water neck of a water cooled engine.

FIG. 15 is a sectional view showing another modified bypass structureassembly and modified bypass position assembly and showing a portion ofan intake manifold and a water neck of a water cooled engine.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

In a water cooled engine, a thermostat controls the flow of water in theengine cooling system. The thermostat operates a thermostat valve whichopens when the water reaches a certain temperature. This allows thewater to circulate through the radiator and through the water jacketthat surrounds the engine. If the thermostat valve sticks in the closedposition, water is not permitted to flow through the cooling system andthis can result in permanently damaging the engine.

The present invention relates to an improvement in a water cooled enginehaving a thermostat interposed in the water flow passageway. Shown inFIG. 1, is a intake manifold 10 portion of a water cooled engine havinga portion of a water flow passageway 12 formed therethrough. The waterflows through the water flow passageway 12 and out a water opening 14 inthe intake manifold 10. A thermostat 16 is interposed in the water flowpassageway 12 generally between the intake manifold 10 and a water neck18. The water neck 18 has a water opening 20 formed therethrough withthe water openings 14 and 20 constituting a portion of the water flowpassageway 12. The thermostat 16 has a thermostat valve 22. Thethermostat valve 22 opens and closes to regulate the temperature of thewater flowing through the water flow passageway 12 and flowing throughthe engine cooling system. The thermostat 16 is a conventional,commercially available thermostat.

Water cooled engines with water flow passageways a and thermostat forcontrolling the flow of water through such water flow passageways arewell known in the art and a detailed description of such is not deemednecessary herein. Further, it is well known in the art to interpose thethermostat generally between an intake manifold and a water neck.

The present invention includes a bypass structure assembly 24 and abypass position assembly 26, as shown in FIG. 1. The bypass structureassembly 24 is adapted to permit the flow of water through thethermostat 16 to be controlled by the thermostat valve 22 in thethermostat 16 in an operating position of the bypass structure assembly24 and to permit the water to bypass the thermostat 16 in a bypassposition of the bypass structure assembly 24 thereby permitting water toflow through the flow passageway bypassing the thermostat 16. The bypassposition assembly 26 is adapted to position the bypass structureassembly 24 in the operating position and in the bypass position.

More particularly, in the embodiment in the invention shown in FIGS.1-4, the bypass structure assembly 24 provides a means for supportingthe thermostat 6 on a portion of the engine interposed in the water flowpassageway 12 for movement of the thermostat 16 from the operatingposition wherein water flows through the water flow passageway and iscontrolled by the thermostat valve 22 and for supporting the thermostat16 so that the thermostat 16 substantially is sealed against a portionof the engine in the operating position of the bypass structure assembly24. The thermostat 16 is movable from the operating position to thebypass position wherein water is permitted to bypass the thermostat 16.The bypass position assembly 26 more particularly is adapted to move thethermostat 16 from the operating position to the bypass position.

The bypass structure assembly 24 includes a thermostat insert 28, asshown in FIGS. 1-4. The thermostat insert 28 has an upper end 30, alower end 32 and an outer peripheral surface 34. A thermostat opening 36is formed through the thermostat insert 28 intersecting the upper andthe lower ends 30 and 32.

A first shaft opening 38 (FIG. 4) is formed through the thermostatinsert 28. The first shaft opening 38 intersects the outer peripheralsurface 34 and extends through the thermostat insert 28 intersecting thethermostat opening 36.

A second shaft opening 40 (FIG. 4) is formed through the thermostatinsert 28. The second shaft opening 40 extends through the outerperipheral surface 34 of the thermostat insert 28 and intersects thethermostat opening 36.

The second shaft opening 40 is aligned with the first shaft opening 38.A first shaft 42 is disposed through the first shaft opening 38. Thefirst shaft 42 is generally supported within the first shaft opening 38.A second shaft 44 (FIGS. 3 and 4) is disposed through the second shaftopening 40. The second shaft 44 is generally disposed in the secondshaft opening 40.

The thermostat opening 36 is sized to receive the thermostat 16. Thethermostat 16 is disposed in the thermostat opening 36. One end of thefirst shaft 42 is secured to the thermostat 16 by way of a screw 46(FIGS. 2-4). One end of the second shaft 44 is secured to the thermostat16 by way of a screw 48 (FIGS. 2-4).

A portion of the first shaft 42 extends a distance beyond the outerperipheral surface 34 of the thermostat insert 28. One end of a handle50 (FIG. 1) is secured to the first shaft 42. A cable 52 (FIG. 1) havinga wire rod 54 (FIG. 1) disposed therethrough is connected to the handle50. More particularly, one end of the wire rod 54 is secured to thehandle 50.

The cable 52 and wire rod 54 extend a distance from the thermostatinsert 28 and the opposite end of the cable 52 is supported on a portionof the vehicle having the bypass structure assembly 24 and bypassposition assembly 26 disposed therein, the portion of the vehicle beingdesignated in FIG. 1 by the general reference numeral 56 for example.The cable 52 and wire rod 54 could extend through the dashboard area ofthe vehicle so that a portion of the wire rod 54 is near the operator ofthe vehicle and operable by the operator, for example. It should benoted that the cable 52 and the wire rod 54 could be mounted on anyportion of the vehicle for remotely operating the bypass structureassembly 24.

The first and the second shafts 42 and 44 and the thermostat 16connected thereto are rotatable in one direction 58 (FIGS. 1 and 4) andin an opposite direction 60 (FIGS. 1 and 4).

A gasket 62 (FIG. 1) is disposed on the intake manifold 10 generallyover the water opening 14. The thermostat insert 28 is disposed on thegasket 62 with the lower end 32 of the thermostat insert 28 beingdisposed adjacent the gasket 62. A second gasket 64 (FIG. 1) is disposedon the upper end of the thermostat insert 28 and the water neck 18 isdisposed on the gasket 64. In this position as shown in FIG. 1, thewater neck 18 is connected by way of bolts 66 and 68 to the intakemanifold 10 with the thermostat 16 being disposed generally between thewater neck 18 and the intake manifold 10 by way of bolts 66 and 68.

Initially, the handle 50 is rotated in the direction 58 or 60 toposition the thermostat in the operating position (shown in FIGS. 1, 2and 4) wherein the thermostat 16 extends over and encompasses thethermostat opening 36. In this position of the thermostat 16, waterflows from the intake manifold 10 through the water opening 14 and intothe thermostat opening 36. The flow of water through the thermostatopening 36 is controlled by the thermostat valve 22. In the openedposition of the thermostat valve 22, the water flows through thethermostat opening 36 and into and through the portion of the water flowpassageway in the water neck 18 with the water being discharged from thewater neck 18 by way of the water opening 14.

If the thermostat valve 22 becomes stuck in the closed position, theoperator can pull the wire rod 54 thereby moving the handle in thedirection 58 or 60 thereby rotatingly moving the thermostat 16 in thedirection 58 or 60 to position the thermostat 16 at an angle withrespect to the thermostat opening 36 thereby positioning the thermostat16 in the bypass position (shown in FIG. 3). In the bypass position,portions of the thermostat 16 are removed from the thermostat opening 36for permitting water to pass through the thermostat opening 36 betweenthe thermostat 16 and the thermostat insert 28 and bypassing thethermostat 16.

In the operating position, the thermostat 16 engages portions of thethermostat insert 28 for substantially closing the thermostat opening 36and preventing water from passing through the thermostat opening 36between the thermostat 16 and the portion of the thermostat insert 28formed by the thermostat opening 36. The operator can return thethermostat 16 to the operating position by moving the wire 54 andcausing the handle 50 to be moved in the direction 58 or 60 for rotatingthe thermostat 16 in the thermostat opening 36 until the thermostat 16has been rotated back to the operating position wherein the thermostatsubstantially encompasses and closes the thermostat opening 36.

In some embodiments, the thermostat insert 28 can be incorporated as anintegral part of the intake manifold 10 or as part of the water neck 18or portions of the thermostat insert 28 could be formed in the intakemanifold 10. In another embodiment, the thermostat insert 28 could beformed in portion of the water neck 18 thereby eliminating the need fora separate thermostat insert such as the thermostat insert 28.

It also should be noted that it is not necessary to include the cable 52and wire rod 54. In this last mentioned embodiment, the operator of thevehicle merely would grip the handle 50 and move the handle 50 in thedirections 58 and 60 for positioning the thermostat 16 in the operatingposition and in the bypass position. The cable 52 and wire rod 54 merelypermit the handle 50 to be operated from a position remote fromthermostat 16 and the thermostat insert 28.

It should be noted that the bypass structure assembly 24 also couldcomprise a separate conduit extending around the thermostat between theintake manifold 10 and the water neck 18 with a valve interposed in theconduit. The valve would be operated by a valve handle on a valve stemextending outwardly from the conduit for opening and closing theconduit. In this embodiment, the valve handle would comprise the bypassposition assembly 26.

The bypass structure assembly 24 comprises the thermostat insert 28 andthe first and the second shafts 42 and 44 for rotatably supporting thethermostat 16 and the thermostat opening 36. The position assembly 26comprises the handle 50, the cable 52 and wire rod 54.

EMBODIMENT OF FIGS. 5 AND 6

Shown in FIGS. 5 and 6 is a modified bypass structure assembly 24a, amodified bypass position assembly 26a and a modified thermostat insert28a.

The modified thermostat insert 28a includes a recess 70 formed in thethermostat opening 36a between the upper end 30a and the lower end 32a.The recess 70 has a diameter larger than the diameter of the thermostat16.

A protrusion 72 is formed on the outer peripheral surface 34a. Theprotrusion 72 extends a distance radially outwardly from the outerperipheral surface 34a. A portion of the protrusion 72 is threaded. Acap 74 is threadedly connected to the protrusion 72. An opening 76 isformed through the cap 74.

A shaft opening 80 extends through the protrusion 72 intersecting thethermostat opening 36a and intersecting the outer end of the protrusion72. A ball 82 is disposed in the cap 74. The ball 82 bearingly engages aportion of the cap 74 formed by the opening 76 and bearingly engages aportion of the protrusion 72.

A handle 84 extends through the shaft opening 80. The handle 84 hasopposite ends 86 and 88. The end 86 of the handle 84 extends a distancebeyond the outer peripheral surface 34a of the thermostat insert 28a anda distance beyond the cap 74. A bar 90 is connected to the end 88 of thehandle 84. The bar 90 is connected to a portion of the thermostat by wayof a fastener 92. A portion of the thermostat 16 also is pivotallyconnected to a portion of the thermostat insert 28a by way of a pivotconnection 94. The thermostat 16 is movable in a pivotal direction 96and in an opposite pivotal direction 98 about the pivot connection 94.

In operation, the end 86 of the handle 84 is moved in an upwardlydirection thereby causing the end 88 to be moved in a downwardlydirection thereby moving the thermostat 16 to the operating positionwherein the thermostat 16 substantially encompasses the thermostatopening 36a. In this operating position, the thermostat valve of thethermostat 16 controls the flow of fluid through the thermostat opening36a and the thermostat insert 28a. When it is desired to move thethermostat 16 to the bypass position, the end 86 of the handle 84 ismoved in a downwardly direction thereby causing the end 88 and the bar90 to be moved in the upwardly direction for causing the thermostat 16to be moved in the direction 96 to a bypass position wherein the waterflowing through the thermostat opening 36a flows around and bypasses thethermostat 16 and the thermostat valve therein.

EMBODIMENT OF FIGS. 7 AND 8

Shown in FIGS. 7 and 8 is a modified bypass structure assembly 24b and amodified bypass position assembly 26b. The modified bypass structureassembly 24b includes a modified thermostat insert 28b.

The modified thermostat insert 28b includes a recess 100 (FIG. 8) in theupper end 30b of the modified thermostat insert 28b. The thermostat 16is disposed in the thermostat opening 36b with a portion of thethermostat 16 resting on the recess 100.

The modified thermostat insert 28b does not include shaft openings likethe shaft openings 38 and 40 shown in FIG. 4. Rather, the thermostatinsert 28b includes an arcuate slot 102 (FIG. 8) formed through thethermostat insert 28b with the arcuate slot 102 intersecting the outerperipheral surface 34b and the thermostat opening 36b. A valve member104 (FIG. 8) is disposed in the thermostat opening 36b with the valvemember 104 being disposed generally adjacent a portion of the thermostat16.

A plurality of bypass openings 106 are formed through the valve member104 with the bypass openings 106 being spaced circumferentially aboutthe outer peripheral surface of the valve member 104 (only one of thebypass openings 106 being designated with a specific reference numeralin FIG. 7 and the bypass openings being shown in dashed lines in FIG.7).

A plurality of bypass openings 108 are formed through the thermostat 16.Each of the bypass 108 are spaced circumferentially about the outerperipheral surface of the thermostat 16. Only one of the bypass openings108 is designated with a specific reference numeral in FIG. 7.

A handle 112 is disposed through the slot 102. The handle 112 hasopposite ends 114 and 116. The end 116 is disposed in the thermostatopening 36b and positioned generally adjacent the valve member 104. Theend 116 of the handle 112 is securely connected to the valve member 104.The end 114 of the handle 112 extends a distance beyond the outerperipheral surface 34b of the thermostat insert 28b. A seal member 118is disposed in the slot 102 for sealing between the handle 112 and thethermostat insert 28b.

In an operating position, the bypass openings 106 in the valve member104 are not aligned with the bypass openings 108 in the thermostat 16b,as shown in FIG. 7, thereby directing the flow of fluid through thethermostat opening 36b through the thermostat 16b. If it is desired tomove the bypass structure assembly 24b to the bypass position, anindividual grips the handle 112 near the end 114 thereof and slides thehandle 112 in the slot 102 to a position wherein the bypass openings 106in the valve member 104 are aligned with the bypass openings 108 in thethermostat 16b. In this bypass position, water flows through the bypassopenings 108 and 106 bypassing the valve member in thermostat 16b.

EMBODIMENT OF FIG. 9

Shown in FIG. 9 is a modified bypass structure assembly 24c and amodified bypass position assembly 26c. The modified bypass structureassembly 24c includes a modified thermostat insert 28c.

The modified insert 28c includes a recess 120 formed through the upperend 30c thereof and extending a distance generally toward the lower end32c forming an annular ledge 122 in the thermostat opening 36c. Aportion of the surface formed by the recess 120 is shaped in the form ofan arc 124 with the arc 124 extending generally between the upper end30c of the thermostat insert 28c and the ledge 122.

The thermostat 16 is disposed in the thermostat opening 36c andpositioned on the ledge 122 in the operating position of the thermostat16. A slot 126 is formed through the thermostat insert 28c with the slot126 intersecting the thermostat opening 26c and a portion of the outerperipheral surface 34c of the thermostat insert 28c. A handle 128 isdisposed through the slot 126.

The handle 128 has opposite ends 130 and 132. The end 130 of the handle128 is disposed generally below a portion of the thermostat 16. The end132 of the handle 128 extends a distance beyond the outer peripheralsurface 34c of the thermostat insert 28c.

An elastomeric seal member 134 is disposed in the slot 126. Theelastomeric seal member 134 includes a slot 136 formed therethrough. Thehandle 128, more particularly, extends through the slot 136 in theelastomeric member 134.

The thermostat 16 is pivotally connected to the thermostat insert 28c byway of a pivotal connection 136. The thermostat 16 is pivotallyconnected to the thermostat insert 28c for pivotal movement in adirection 138 and in an opposite direction 140.

In operation, the handle 128 is moved in a downwardly direction 142thereby allowing a thermostat 16 to be pivotally moved in the direction140 to a position wherein the thermostat rests on the ledge 122. In thisposition, the bypass structure assembly 24c is in the operating positionand the flow of water through the thermostat opening 36c is controlledby the thermostat valve in the thermostat 16.

If it is desired to move the thermostat 16 to the bypass position, thehandle 128 is moved in the upwardly direction 144 thereby pivotallymoving the thermostat 16 in the direction 138 to a position wherein aportion of the thermostat 16 is removed from the thermostat opening 26cthereby allowing water to flow through the thermostat opening 36cbypassing the thermostat 16 and the thermostat valve therein.

EMBODIMENT OF FIG. 10

Shown in FIG. 10 is a modified thermostat 16d having a modifiedthermostat valve 22d therein. The thermostat valve 22d is shown in theopened position in FIG. 10. The thermostat 16d is mounted in a modifiedintake manifold 10d which is connected to a modified water neck 18d. Inthis embodiment, a modified thermostat insert 28d comprises an integralportion of the intake manifold 10d.

Water flows from the engine in a direction 200. In the opened positionof the thermostat valve 22d, the water flows through the thermostatinsert 28d and through the thermostat 16d and into the water neck 18d ina direction 202. The water flowing in the direction 202 flows throughthe water neck 18d and into the radiator.

With the type of thermostat 16d shown in FIG. 10 and the modified intakemanifold insert 10d, a portion of the thermostat 16d is seated on a seat204 formed in the intake manifold insert 10d. The seat 204 surrounds abypass opening 206. The thermostat 16d operates to move the portion ofthe thermostat seated against the seat 204 in an upwardly direction whenthe engine first is started thereby unseating the thermostat from theseat 204 and permitting the water to flow in the direction 200 and flowthrough the bypass opening 206 in a direction 208 back to the engine.When the water or coolant warms to a predetermined temperature, thethermostat 16d operates to again seat the portion of the thermostatagainst the seat 204 thereby closing the bypass opening 206. Thermostatswhich operate in the manner just described with respect to thethermostat 16d are commercially available and are well known in the artand a detailed description of such thermostats is not deemed necessaryherein.

The modified insert 28d includes a handle opening 210 which extendsthrough the modified insert 28d intersecting the outer peripheralsurface 34d thereof. A protrusion 212 is formed on the outer peripheralsurface 34d with the protrusion 212 extending a distance radiallyoutwardly from the outer peripheral surface 34d. A portion of theprotrusion 212 is threaded and a cap 214 is threadedly secured to theprotrusion 212.

An opening 216 is formed through the cap 214. A ball 218 is disposed inthe cap 214 and the ball 218 generally engages a portion of the cap 214and a portion of the protrusion 212.

A handle 220 extends through the ball 218 and the handle 220 is securedto the ball 218. The handle 220 has opposite ends 222 and 224. The end224 of the handle 220 extends a distance from the outer peripheralsurface 34d of the thermostat insert 28d. The end 222 of the handle 220is disposed under and engages a portion of the thermostat 16d. The end222 of the handle 220 may be secured to the thermostat 16d.

A portion of the water neck 18d also comprises a portion of the modifiedinsert 28d. In particularly, a recess 226 is formed in the water neck18d with the recess 226 generally surrounding the water opening 20d. Therecess 226 has a diameter larger than the diameter of the thermostat16d.

The thermostat 16d is shown in the operating position in FIG. 10 whereinthe thermostat valve 22d controls the flow of water through thethermostat and through the water opening 20d and the water neck 18d. Ifit is desired to move the thermostat 16d to the bypass position, the end224 of the handle 220 is moved in a downwardly direction thereby causingthe end 222 of the handle 220 to be moved in an upwardly direction 228moving the thermostat 16d in the upwardly direction 228. As thethermostat 16d is moved in the upwardly direction 228, the thermostat16d is moved through the recessed 226 to the bypass position permittingwater to flow through the thermostat opening 36d and around thethermostat 16d through the recess 226 thereby bypassing the thermostat16d. The handle 212 is moved in an upwardly direction for causing theend 222 of the handle 220 to be moved in a downwardly direction oppositethe direction 228 for repositioning the thermostat 16d in the operatingposition as shown in FIG. 10.

In this embodiment, the thermostat insert 28d comprises a portion of theintake manifold 10d and the recess 226 portion of the water neck 18d.

EMBODIMENT OF FIG. 11

Shown in FIG. 11 is a modified bypass structure assembly 24e consistingof a modified thermostat insert 28e cooperating with a bypass positionassembly 26 which is constructed exactly like the bypass positionassembly 26 shown in FIG. 1 and described in detailed before.

The thermostat insert 28e is constructed exactly like the thermostatinsert 28 shown in FIGS. 1, 2, 3 and 4 and described in detail before,except the thermostat insert 28e is an integral part of the intakemanifold 10e with the thermostat 16 being rotatably mounted in the wateropening 14e of the intake manifold 10e.

In this embodiment, the water neck 18 is mounted directly to the intakemanifold by way of the bolts 66 and 68 with a single gasket 232 beinginterposed between the water neck 18 and the intake manifold 10a.

EMBODIMENT OF FIG. 12

Shown in FIG. 12 is a water neck 18f which is constructed exactly likethe water neck 18 shown in FIG. 1 and described in detail before, exceptthe bypass structure assembly 24f is incorporated in the water neck 18a.The bypass structure assembly 24f is constructed exactly like the bypassstructure assembly 24 shown in FIG. 1, except the thermostat insert 28fis incorporated as an integral part of the water neck 18a rather thanbeing a separate element. The thermostat insert 28f is operated by abypass position assembly 26 which is constructed exactly like the bypassposition assembly 26 shown in FIG. 1 and described in detailed before.The bypass position assembly 26 operates and functions to move thebypass structure assembly 28a in the operating position and in thebypass position in a manner exactly like that described before inconnection with the embodiment shown in FIG. 1. The water neck 18f isbolted to the intake manifold 10 (shown in FIG. 1) by way of the bolts66 and 68 with a gasket (not shown) being interposed between the waterneck 18f and the intake manifold 10.

EMBODIMENT OF FIG. 13

Shown in FIG. 13 is a modified bypass structure assembly 24g and amodified bypass position assembly 26f. The bypass structure assembly 24gincludes a modified thermostat insert 28g. The thermostat insert 28g isincorporated in the modified water neck 18g and includes a counterbore240 formed in an end 242 of the water neck 18g. The thermostat 16 isdisposed generally within the counterbore 240 and positioned on an upperend 244 of a modified intake manifold 10g. The modified intake manifold10g, as shown in FIG. 13, more particularly, is a portion of an enginecylinder head.

An opening 246 is formed through the water neck 18g generally directlyabove the thermostat 16. A housing 248 is disposed in the opening 246with the housing 248 extending a distance above the water neck 18aterminating with an upper end 250.

A rod 252 extends through the housing 248. The rod 252 has opposite ends254 and 256. The end 254 of the rod 252 is secured to the thermostat 16.The end 256 of the rod 252 extends through the housing 248 and extends adistance beyond the upper end 250 of the housing 248. The end 256 of therod 252 is pivotally connected to one end of a handle 258. The handle258 is movable in directions 260 and 262.

In the operating position, the thermostat 16 is seated on the upper end244 of the intake manifold 10g as shown in FIG. 13. To move thethermostat to the bypass position, the handle 258 is moved in theupwardly direction 260 with portions of the handle 258 engaging portionsof the housing 248 causing the rod 252 to be moved in the upwardlydirection. The movement of the rod 252 in the upwardly direction causesthe thermostat 16 to be moved in the upwardly direction the bypassposition wherein the water flows around the thermostat 16 throughportions of the recess 240.

EMBODIMENT OF FIG. 14

Shown in FIG. 14 is a modified bypass structure assembly 24h and amodified bypass position assembly 26g associated with a modified waterneck 18h and a modified intake manifold 10h. The intake manifold 10hmore particularly is an engine cylinder head. The water neck 18h issecured to the intake manifold 10h by way of bolts 300 and 302. Thebypass structure assembly 24h includes a recess 304 formed in the waterneck 18h. The thermostat 16 is seated on a portion of the water neck 18hand positioned generally within the recess 304. The water neck 18hincludes one water passageway 306 which passes water to the radiator anda second water passageway 308 which passes water to the heater.

The bypass position assembly 26h is constructed exactly like the bypassposition assembly 26f shown in FIG. 13 and described in detail before.

The thermostat 16 is shown in the operating position in FIG. 14. To movethe thermostat 16 to the bypass position, the handle 58 is moved in theupwardly direction thereby causing the rod 252 and the thermostat 16connected thereto to be moved in the upward direction to a positionwherein the water flows pass the thermostat and through portions formedby the recess 304 and the water neck 18h thereby passing the thermostat16.

EMBODIMENT OF FIG. 15

Shown in FIG. 15 is a modified bypass structure assembly 24i and amodified bypass position assembly 26i. The modified bypass structureassembly 24i includes the modified thermostat insert 28i which isincorporated as part of the water neck 18i. The water neck 18i and theintake manifold 10i are constructed like the water neck 18d and theintake manifold 10d shown in FIG. 10.

The thermostat insert 28i is constructed like the thermostat insert 28dshown in FIG. 10. The bypass position assembly 26i is constructedexactly like the bypass position assembly 26g shown in FIG. 13.

The thermostat 16 is shown in FIG. 15 in the bypass position. To movethe thermostat 16 to the bypass position or to the operating position,the individual operates the handle 258 in a manner exactly like thatdescribed before in connection with FIG. 13.

Changes may be made in the construction and the operation of the variouscomponents, elements and assemblies described herein and withoutdeparting from the spirit and scope of the invention as defined in thefollowing claims.

What is claimed is:
 1. An improvement in a water cooled engine having athermostat interposed in a water flow passageway wherein the thermostathas a thermostat valve which opens and closes for regulating thetemperature of the water, wherein the engine further comprises an intakemanifold having a water opening extending through a portion thereof anda water-neck having a water opening extending through a portion thereof,the improvement comprising:a bypass structure assembly for permittingthe flow of water through the thermostat to be controlled by thethermostat valve in an operating position of the bypass structureassembly and for permitting the water to bypass the thermostat in abypass position of the bypass structure assembly wherein the water flowsthrough the flow passageway bypassing the thermostat, the bypassstructure assembly being adapted to support the thermostat on a portionof the engine interposed in the flow passageway for movement of thethermostat from the operating position wherein the water flow throughthe water flow passageway is controlled by the thermostat valve of thethermostat and for movement of the thermostat from the operatingposition to the bypass position wherein water is permitted to bypass thethermostat; and a bypass position assembly for positioning the bypassstructure assembly in the operating position and for positioning thebypass structure assembly in the bypass position, the bypass positionassembly being further defined as moving the thermostat from theoperating position to the bypass position and moving the thermostat fromthe bypass position to the operating position; and wherein the bypassstructure assembly further comprises: a thermostat insert having anouter peripheral surface and a thermostat opening extendingtherethrough, the thermostat being disposed in the thermostat opening,the thermostat insert having an upper end and a lower end, the lower endof the thermostat insert being connected to the intake manifold with thewater opening in the intake manifold being in fluidic communication withthe thermostat opening in the thermostat insert, and the water-neckbeing connected to the upper end of the thermostat insert with the wateropening in the water-neck being in fluidic communication with thethermostat opening in the thermostat insert; and shaft means connectedto the thermostat for rotating the thermostat to the operating positionwherein the thermostat substantially closes the thermostat opening inthe thermostat insert and the flow of water through the thermostat iscontrolled by the thermostat valve in the thermostat and for rotatingthe thermostat to the bypass position wherein water flows through thethermostat opening and around the thermostat bypassing the thermostatvalve.
 2. The improvement of claim 1 wherein the thermostat extends atan angle generally perpendicular to the flow of fluid through thethermostat opening in the operating position and the thermostatsubstantially encompasses and encloses the thermostat opening in theoperating position, and wherein the thermostat is disposed at an angleto a plane extending perpendicular to the flow of fluid through thethermostat opening in the bypass position of the thermostat.
 3. Theimprovement of claim 1 wherein the bypass position assembly furthercomprises:a handle connected to the shaft means for rotating the shaftmeans for rotating the thermostat to the operating position and to thebypass position.
 4. The improvement of claim 3 further comprising:meansconnected to the handle for rotating the handle and the shaft meansconnected thereto from a position remote from the handle.
 5. Theimprovement of claim 3 wherein the shaft means extends through a portionof the thermostat insert and a portion of the handle means is connectedto a portion of the shaft means which extends beyond the outerperipheral surface of the thermostat insert.
 6. The improvement of claim1 wherein the thermostat insert further comprises:a first shaft openingextending through the thermostat insert intersecting the thermostatinsert and intersecting the outer peripheral surface of the thermostatinsert; and a second shaft opening extending through the thermostatinsert intersecting the thermostat opening and intersecting the outerperipheral surface of the thermostat insert; and wherein the shaft meansfurther comprises:a first shaft having opposite ends rotatingly disposedin the first shaft opening with one end of the first shaft extendinginto the thermostat opening and being connected to the thermostat andthe opposite end of the first shaft extending a distance beyond theouter peripheral surface of the thermostat insert; a handle connected tothe end of the first shaft extending beyond the outer peripheral surfaceof the thermostat insert for rotating the first shaft and the thermostatconnected thereto to the operating position and to the bypass position;and a second shaft having opposite ends rotatingly disposed in thesecond shaft opening, one end of the second shaft being connected to aportion of the thermostat.